Bicycle training unit



FIG. 1 is a perspective view of a bicycle training unit showing my new design, the bicycle shown in broken lines is for illustrative purposes only and forms no part of the claimed design;

FIG. 2 is a right side view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a back view thereof. 

The ornamental design for a bicycle training unit, as shown and described. 